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DTC5280DL

DATA TECHNOLOGY CORPORATION

DTC5280DL

Data bus: 16-bit, ISA

Size: Full-length, full-height card

Hard drives supported: Two MFM ST506/412 drives

Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB

Sector Interleave: 2:1

CONNECTIONS

Function

Location

34-pin control cable connector-floppy drive

J1

34-pin data cable connector-hard drive

J2

20-pin data cable connector-drive 0

J3

20-pin data cable connector-drive 1

J4

4-pin connector-drive active LED

J5

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Factory configured - do not alter

JP1

open

Port addresses are 1F0-1F7 and 3F2-3F7h

JP2

open

 

Port addresses are 170-177 and 372-377h

JP2

closed

Factory configured - do not alter

JP3

open

Floppy drive precompensation is scaled by data rate:500khz=125ns, 300KHz=208ns, 50KHz=250ns

JP4

pins 1 & 2 open

 

Floppy drive precompensation is 125ns

JP4

pins 1 & 2 closed

Drive 0 is a single speed floppy drive

JP4

pins 3 & 4 closed

 

Drive 0 is a dual speed floppy drive

JP4

pins 3 & 4 open

Drive 1 is a single speed floppy drive

JP4

pins 5 & 6 closed

 

Drive 1 is a dual speed floppy drive

JP4

pins 5 & 6 open

FLOPPY DRIVE CONFIGURATION

Function

Location

Setting

Floppy drive 0 uses standard logic

JP5

pins 4 & 6 closed

 

Floppy drive 0 uses reverse logic

JP5

pins 2 & 4 closed

Floppy drive 1 uses standard logic

JP5

pins 3 & 5 closed

 

Floppy drive 1 uses reverse logic

JP5

pins 1 & 3 closed